Protein electrochemistry using aligned carbon nanotube arrays

J. Justin Gooding, Rahmat Wibowo, Jingquan Liu, Wenrong Yang, Dusan Losic, Shannon Orbons, Freya J. Mearns, Joe G. Shapter, D. Brynn Hibbert

Research output: Contribution to journalArticlepeer-review

812 Citations (Scopus)

Abstract

The remarkable electrocatalytic properties and small size of carbon nanotubes make them ideal for achieving direct electron transfer to proteins, important in understanding their redox properties and in the development of biosensors. Here, we report shortened SWNTs can be aligned normal to an electrode by self-assembly and act as molecular wires to allow electrical communication between the underlying electrode and redox proteins covalently attached to the ends of the SWNTs, in this case, microperoxidase MP-11. The efficiency of the electron transfer through the SWNTs is demonstrated by electrodes modified with tubes cut to different lengths having the same electron-transfer rate constant.

Original languageEnglish
Pages (from-to)9006-9007
Number of pages2
JournalJournal of the American Chemical Society
Volume125
Issue number30
DOIs
Publication statusPublished - 30 Jul 2003

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